Delta Labs - Level 3: Union Aerospace Research Division

"My patience with you is wearing thin!"

- Malcolm Betruger

Delta Labs - Level 3: Union Aerospace Research Division is the eighteenth level of Doom 3. The player is hot on the heels of Betruger and travels through several second-generation teleporter units, eventually getting close to Betruger as he is teleporting. This sector features a large amount of hellish growth in it, indicating that the Hell is very near. This is also the last level where Z-Secs are fought.

Summary
The marine continues the pursuit of Betruger. This sector of Delta Labs contains three teleport stations, located in chambers (each of them have to be first unlocked in nearby security stations), the marine has to use to travel around. When the marine reaches the teleport station 1, he needs to select "Balcony" in the control panel. Through the balcony the marine can proceed further and reach teleport station 2. When he reaches it, he needs to select "Storage" in the terminal. After using the teleport, the marine will find out that the bridge to sector 4 is destroyed. However, the marine can use the teleport station 3 to get to the exit. When the marine gets to the station, he can see Betruger himself teleporting to the exit. The marine soon does the same (by selecting "Exit" in the terminal), and proceeds to sector 4.

Areas
Level 3 Entrance
 * Chamber 1 Access
 * Security Station 1
 * HST Observation
 * Level 3 Lavatory
 * Lower Terminal Office
 * Chamber 1 Terminal - Lower
 * Chamber 1 Control
 * Decon Chamber 1 - Lower
 * T1 Observation - Lower
 * T1 Access
 * Teleport Station 1
 * T1 Stairwell
 * T1 Observation - Upper
 * Decon Chamber 1 - Upper
 * Chamber 1 Terminal - Upper
 * Chamber 1 Storage
 * Chamber 2 Access
 * Security Station 2
 * Upper Terminal Office
 * Upper Elevator Access
 * Conference Room
 * Terminal Processing
 * Processing Subfloor
 * Chamber 2 Terminal
 * Chamber 2 Control
 * Chamber 2 Storage
 * T2 Pad 1
 * Teleport Station 2
 * Lower Storage
 * Lower Elevator Access
 * Level 3 Common Area
 * Hydrogen Storage Transfer
 * Chamber 3 Access
 * Chamber 3 Terminal
 * Chamber 3 Control Access
 * Chamber 3 Control
 * Decon Chamber 3
 * Teleport Station 3
 * Security Station 3
 * Terminal Office Storage
 * Vent Shaft
 * Level 1 Elevator Access
 * Teleporter 4 Access
 * Transfer Bay

Characters

 * Malcolm Betruger
 * UAC announcer

PDAs

 * Frank Cerano. Found in Lower Terminal Office.
 * Han Lee. Found in Chamber 1 Control.
 * Marten Shultz. Found in Security Station 3.

Enemies
The enemy count on Nightmare is the same as on Veteran.

* One of the revenants has only 50 health.

Items
The item count on Nightmare is the same as on Veteran, except the med kits are absent. There are no changes in the item amount in the BFG Edition. There are also six health stations on the level, five of which have 100 health, and one with 60 health (all have 100 health in BFG Edition).

Starting inventory
If the player starts the level via a console command, they will start with these items:

Locker codes
For the sources of the codes, see Doom 3 locker codes.
 * Storage locker #386 - Supplies: 836. Contains: med kit (large) x2, bullets (large), clip (large), ammo belt.
 * Storage locker #387 - Supplies: 836. Contains: med kit (large), security armor, clip (large), hand grenades, rockets (large).
 * Storage locker #317 - Supplies: 841. Contains: med kit (large) x2, security armor, bullets (large), clip (large) x2, rockets (large).

Secrets

 * In Teleport Station 3, there are two optional locations the player can travel to before heading to "Exit" to find some supplies, "Security" and "Storage".

Trivia

 * On the original Xbox version of the game this level was divided into two parts: Delta Labs - Level 3 South and Delta Labs - Level 3 North.
 * In the T1 stairwell near the hellgrowth, demonic laughing noises similar to those made by cherubs can be heard.